Electrochemical Motor

File # MEC No 2009
Description This totally sealed prime mover converts DC energy into mechanical work by using an electrochemical cell which transfers small amounts of stored hydrogen, reversibly, across a membrane, resulting in reciprocating linear displacement of a diaphragm or piston.

The photograph shows the cross-section of a 3.3 cm diameter electrochemical motor consisting of a transfer cell, a diaphragm, a small hydrogen storage and wiring.

Advantages Electrochemical motors are current-driven devices characterized by high efficiency, rapid response to current signals and ease of control. They are amenable to miniaturization and unconventional geometries.
Applications The integral internal pressure sensor provides information to a microprocessor which controls the diaphragm (piston or bellows), which can be accurately positioned in a bilateral motion. This powerful integration can be used for applications such as:
  • Electrochemical actuators for millimeter to centimeter displacement
  • Electrochemical pumps
  • Electrochemical compressors
  • Electrochemical valves
  • Intelligent reactive force/pressure sensors
  • Robotic effectors/gripper
State of Development Proof of concept demonstration of a battery-operated pump incorporating an 8-electrodes planar multijunction electrochemical cell and an integral electrochemical sensor, under microprocessor control.
Rights Available Exclusive or non-exclusive or specific applications/markets.
Support Technical assistance available.
Patent Status U.S.# 5,149,413; 4,648,955; 5,038,821; 5,334,304. Foreign patents.
Key Words Electrochemical motor, electrochemical actuators, electrochemical valves, electrochemical pumps, effectors, force sensor.
Contact Dr. Henri Maget (ext.14) or Steve Swanson (ext.11)

Med-e-Cell tel (858)552-0781
fax (858)552-8018
Please send questions or comments about this web site to: